ok first of all you going win this scenario for 100% since you have arknatos god.
Its not chellenging at all. and its doesn't have any active triggers.
Like i said by playability
Arkantos god can just kill every enemy even those 3 titans at his own.
My suggestion is to replace the arkantos god to normal arkantos and at exp system to make it chellenging but also not impossible.
Its not quite creative at all but the 0.5+ points are for the wall part where siege weapons lay behind it and i like that.
There were just only roads,marsh forest and marsh gound but further more there was nothing on that map.
I can see already you didn't put a lot of work in it. I know its cost so much time but you get a good rating for the map design ;)
The instruction were clear just kill those titans but there is no story in the scenario.
I was quite bored to see my heroes fight those mass myt units and there was no music to.
I suggest to replace arkantos god to normal arkantos with exp system to make it more harder but not impossible.
May its will be intresting with more paths with dead ends.
Its is a poor scenario but may a few good triggers and then i'm sure it will make your scenario much more better.
Dont let this review discouraged you and takes the tip with you.
If you dont know how to use triggers then i'm sure there are guides in this sites that can help you.